156078542 has 4 divisors (see below), whose sum is σ = 234117816. Its totient is φ = 78039270.

The previous prime is 156078539. The next prime is 156078553. The reversal of 156078542 is 245870651.

156078542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×156078542² = 48721022545691528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 156078496 and 156078505.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39019634 + ... + 39019637.

It is an arithmetic number, because the mean of its divisors is an integer number (58529454).

Almost surely, 2^156078542 is an apocalyptic number.

156078542 is a deficient number, since it is larger than the sum of its proper divisors (78039274).

156078542 is an equidigital number, since it uses as much as digits as its factorization.

156078542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78039273.

The product of its (nonzero) digits is 67200, while the sum is 38.

The square root of 156078542 is about 12493.1397975049. The cubic root of 156078542 is about 538.4115897017.

The spelling of 156078542 in words is "one hundred fifty-six million, seventy-eight thousand, five hundred forty-two".